rcd
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rcd

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  1. IanBristol

    RCD Trips

    Hello, I'm not an electrician. My RCD at home constantly trips. I tried turning off the power, resetting the RCD and putting the circuits back one by one, to work out what was tripping it. All were okay, except when I turned back on 'downstairs sockets' or 'upstairs sockets' either one of those...
  2. J

    RCD trips

    Hello Elderly woman here, read lots of forums like this looking for advice but currently none the wiser,! I had Led PIR lights installed recently, replacing old pir security lights and an old decorative light at the front door all using the original wiring. An electrician did the work. The...
  3. K

    UK Scame Advance 2 RCD interlock socket

    Scame Advance 2 RCD interlock socket, has anyone fitted these? There is no access to the RCD when energised. How can you conduct an RCD function test? I’ve attached the data sheet with a product photo
  4. timhoward

    Distribution circuits in Section 705 location, RCD needed?

    I just want to check how I should be interpreting section 705. 705.411.1 states required disconnection devices, the first two indents covering final circuits and sockets, requiring 30ma and 100ma RCD's depending on rating of socket. Indent 3 says " all other circuits" need 300ma RCD. Does that...
  5. J

    3 phase TPN boards - earthing TT

    Hi guys, starting a new install on a job soon and having a complete mind blank. The supply at the main cut-out is a 3 phase TNCS supply. There is then a 50mm SWA running a considerable distance to a workshop where i will be installing a new TPN board as well as an earth rod to make all the...
  6. wsoppitt

    Rcd fault

    Hello guys and girls , I have a question if I may. Have to go and look at a intermittent fault on rcd , I'm told the circuit holds whilst using light appliances ( TV, etc ) but randomly trips the rcd on heavier loads ( hair dryer ) . The manual operation of the test button also doesn't work...
  7. M

    RCD testing

    Hello all. Can anyone inform me on what the latest guidance on the frequency of RCD testing is? I test my RCD's annually and record the x1/2, x1 and x5 trip and 0-180degrees annually, and replace failures. I also carry out a functional test whilst I'm doing this, and then a further functional...
  8. B

    UK RCD Protecting Distribution Cables on a TT on Industrial Estate

    Hi All, I'm looking to pick the brains of experienced engineers who have dealt with TT more than I have please. We have an installation on a site which may or may not be unique. There are four 12m x 12m units inline with each other, all connected as one building, with the plan to build a...
  9. G

    UK RCD on bathroom ceiling?

    hello im an industrial maintence electrician (mainly emergencies in factory processes & HV work) I do very few domestic jobs - i did pass my 18th edition in 2019 but memory is very vague doing a bit of work in my home and removing an electric shower and fitting thermostatic & also fitting a...
  10. SJD

    UK Identification of Crabtree Polestar RCD type

    One of my customers has a TPN board fitted with some Crabtree Polestar MCBs with attached RCDs, and I was wanting to confirm the type of RCD (i.e. AC, A). The RCD modules have either no marking to indicate type, or are marked with the logo for Type AC or Type A. See attached photos. I'm...
  11. newfutile

    Test the (RCD) Residual Current Device or die

    Just seen this label on a consumer unit im testing. As far am im aware no one ever pressed the test button.
  12. KeenPensioner

    UK RCD tripping explanation

    As a keen adult learner any help would be appreciated I understand that an RCD trips when there is an imbalance detected between L and N. If a 30mA RCD is monitoring several circuits (in a split board for example) and one of the circuits is protected by a 32A Type B MCB. I'm trying to...
  13. R

    RCD tripping

    I recently purchased waterproof garden strip light from Amazon but yesterday I turned on garden light at night time after a long spell of heavy rain during day time and I heard a buzzing sound coming from it. After a while my RCD tripped but the same light when I turned on dry day nothing...
  14. timhoward

    32 amp 3 phase socket, 300ma RCD

    I'm interested how you would all approach this one. A 3 phase distribution board on a caravan site, under lock and key. Only warden and manager have access. One of the final circuits is protected by a 32A 3ph MCB and it supplies a 32 amp TPN socket adjacent to the board, the socket having it's...
  15. L

    ELCB or RCD for instant tankless shower water heaters?

    Some electric tankless shower water heaters have inbuilt ELCB. Are they better than Triton water heaters which don't have it ? and does Triton tankless water heaters have any inbuilt security? Or an external RCD is better ?
  16. S

    Communal DB does it require RCD protection to be a sat EICR

    Question is does this DB really need RCD protection as there are only internal lights and sockets supplying this large building that used to be a mansion and is now 4 flats. heres the DB its labelled L/L on the right only providing 3 light pendants a timer light and 2 single sockets all in the...
  17. littlespark

    Little problem here. RCD…

    Doing a kitchen job for my daughter’s music teacher, who also happens to have been in my wife’s class at school. Nothing big… just a little alteration to sockets, and run in a new cable for a built in oven. Original cooker point being used for hob. I hadn’t looked inside the board… just noted...
  18. Electreacle

    RCD protection upstream?…

    Evening everyone… I’ve attached pictures for your leisure.. so basically the customer does not have any RCD protection.. 3036 fuseboard is in situ.. they want an outside socket.. I’ve told them that I can’t install one as there’s no RCD.. they’re asking if there’s any alternative ways safely...
  19. Brownie91

    Is RCD protection required on SWA supply cable to EV?

    Hi all, I am at odds on whether RCD protection is required on an SWA of 14 metres, clipped direct under flooring direct from CU to an exterior Tesla EV charger. The Tesla charger is three phase and to be a 22kw supply at 32A. TESLA SPEC: The wall charger itself features a built in RCD Type A...
  20. rwkshaw

    RCD seems to trip without physically tripping???

    Hi, I seem to have an RCD that keeps cutting the power at random times without actually tripping, if I reset it, the power comes on and will stay on for anything from a few hours to a few weeks. I've been through all the obvious things, unplugging everything, plug in one at a time etc, nothing...

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